Drop pin for stop motion
AssigneeN.V. Michel Van de Wiele
InventorJohnny Debaes
Life of this patent
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Abstract
Drop pin for stop motion (1) comprising a body (2) with a yarn lead-through opening (3) provided to rest on a thread, extending through this opening (3), by means of a supporting edge (4), forming a concavely curved bordering of this opening (3) and which, in cross-section, has a convex form. The form of the supporting surface (4) may be a rounded spherical form, as well as a form with a number of angle forming sides, such as for instance a polygon. Preferably, the yarn lead-through opening (3) is circular. Also a device for detecting the thread breakage on a weaving machine, comprising a number of similar drop pins for stop motion and a weaving machine provided with a similar device are within the scope of this invention.
Claims9
Drop pin for stop motion (1) comprising a body with a yarn lead-through opening (3) provided to rest on a thread extending through this opening (3), by means of a supporting edge (4), forming a concavely curved bordering of this opening (3), characterized in that said supporting edge (4), in cross-section, has a convex form.
Drop pin for stop motion (1) according to anyone of the preceding claims, characterized in that the supporting surface (4), in cross-section, has a rounded spherical form.
Drop pin for stop motion (1) according to anyone of the preceding claims, characterized in that the edge (7) bordering the yarn lead-through opening (3) is carried out over almost its entire length as the supporting surface (4).
Drop pin for stop motion (1) according to anyone of the preceding claims, characterized in that the parts (8),(9) of the drop pin for the stop motion, bordering the yarn lead-through opening (3) on both sides of the longitudinal axis (6) of the drop pin (1), are at a distance from each other in a direction perpendicular to the plane of the drop pin (1), so that a thread extending through the yarn lead-through opening (3) may extend through the yarn lead-through opening (3) in the plane of the drop pin for stop motion (1).
Device for detecting a thread breakage on a weaving machine comprising a number of drop pins for stop motion (1), provided to be carried in a working position by a respective thread and to leave this working position at a thread breakage, detection means for detecting that one or more drop pins for stop motion (1) have left their working position, and means to generate a warning signal and/of a control signal in case of such a detection, characterized in that this device comprises drop pins for stop motion (1) having the characteristics of the preceding claims.
Dependencies are inferred from the claim text.